| 摘要 |
<p>An air conditioning apparatus for a vehicle, which has cooling means such as an evaporator (131) and heating means such as a heater core (141) for controlling the quantity of heat received by air passing through both these means via a temperature control door (142). This apparatus has a controller (2) which inputs signals from a potentiometer (147) in a heat exchange unit (1), a passenger compartment temperature sensor (170), and an exhaust gas temperature sensor (160), and signals from a temperature setter (31) and a manual dehumidifying switch (32) of an operating unit (3), and a switch (33) of a diffuser (106). The controller (2) has an A/D converter (21), a microcomputer (22) and an interface circuit (23) operating the heat exchangers (131), (141) of the unit (1) and doors (111), (142), (151), (156), calculates the temperature difference PI between the compartment temperature and a target temperature to measure the quantity of heat required, and operates only the heating means when the air in the compartment requires heating and only the cooling means when theair in the compartment requires cooling. This apparatus automatically controls the temperature without any loss of continuity in the temperature control, and reduces the operating range of the cooling means to a large extent, thereby reducing the power consumption.</p> |
